Big Sioux River RD over Big Sioux River
FairPlymouth County, Iowa · 0.5 Mi. N of Jct. Ia 12 · Structure no. 000000000603911
- Built
- 1996
- 29 years old
- Condition
- Fair
- inspected June 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 490 ft
- 4 main spans
- Daily traffic
- 1,121
- 2022 count
- Owner
- State
- Other State Agency
About this bridge
Big Sioux River RD over Big Sioux River is a prestressed concrete stringer/multi-beam or girder carrying Big Sioux River RD over Big Sioux River in Plymouth County, Iowa. It was built in 1996, so it is 29 years old, younger than the Iowa average of 45.5 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 1,121 vehicles a day, projected to reach 1,121 by 2043. The structure is 490 ft (149.3 m) long and 39 ft wide. If it were closed, the detour would be 14.9 mi (24 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Big Sioux River RD over Big Sioux River built?
It was built in 1996, making it 29 years old in 2025.
What condition is Big Sioux River RD over Big Sioux River in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in June 2023.
How much traffic does Big Sioux River RD over Big Sioux River carry?
About 1,121 vehicles per day (2022 count).
How long is Big Sioux River RD over Big Sioux River?
The structure is 490 ft (149.3 m) long with a longest span of 121 ft (37 m) and a deck 39 ft wide.
Who owns Big Sioux River RD over Big Sioux River?
It is owned by the Other State Agency.